6216422443221 has 8 divisors (see below), whose sum is σ = 8292026937600. Its totient is φ = 4142549788832.

The previous prime is 6216422443181. The next prime is 6216422443243. The reversal of 6216422443221 is 1223442246126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6216422443221 - 2¹⁵ = 6216422410453 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6216422443221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6216422443261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432951621 + ... + 432965978.

It is an arithmetic number, because the mean of its divisors is an integer number (1036503367200).

Almost surely, 2^{6216422443221} is an apocalyptic number.

It is an amenable number.

6216422443221 is a deficient number, since it is larger than the sum of its proper divisors (2075604494379).

6216422443221 is a wasteful number, since it uses less digits than its factorization.

6216422443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865919995.

The product of its digits is 221184, while the sum is 39.

Adding to 6216422443221 its reverse (1223442246126), we get a palindrome (7439864689347).

The spelling of 6216422443221 in words is "six trillion, two hundred sixteen billion, four hundred twenty-two million, four hundred forty-three thousand, two hundred twenty-one".